WO1994020679A1 - Security paper comprising localised areas with reduced thickness and opacity, and method for making same - Google Patents

Security paper comprising localised areas with reduced thickness and opacity, and method for making same Download PDF

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Publication number
WO1994020679A1
WO1994020679A1 PCT/FR1994/000225 FR9400225W WO9420679A1 WO 1994020679 A1 WO1994020679 A1 WO 1994020679A1 FR 9400225 W FR9400225 W FR 9400225W WO 9420679 A1 WO9420679 A1 WO 9420679A1
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WO
WIPO (PCT)
Prior art keywords
paper
thickness
sheet
characterized
opacity
Prior art date
Application number
PCT/FR1994/000225
Other languages
French (fr)
Inventor
Pierre Doublet
Yves Douesneau
Jean-Paul Menez
Original Assignee
Arjo Wiggins S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
Priority to FR93/02373 priority Critical
Priority to FR9302373 priority
Priority to FR9311485 priority
Priority to FR93/11485 priority
Application filed by Arjo Wiggins S.A. filed Critical Arjo Wiggins S.A.
Publication of WO1994020679A1 publication Critical patent/WO1994020679A1/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26230137&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1994020679(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/06Vegetable or imitation parchment; Glassine paper
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/44Watermarking devices
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006Making patterned paper
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/06Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
    • D21F11/08Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type paper or board consisting of two or more layers
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper

Abstract

A method for making a paper sheet comprising at least one region which is thinner than the rest of the sheet. According to the method, a first paper layer (3) is formed on a wire in a first wet end of a paper-making machine, a second paper layer (5) is formed on a wire in a second wet end of the paper-making machine, one of the two paper layers has a number of localised thinner regions (8) so that the thickness (e2) of said paper layers in said regions is up to 50 % less than the thickness (et) of the rest of the sheet, and the two layers are joined together and dried. The resulting paper may be used in banknotes or cheques.

Description

SECURITY PAPER WITH LOCALIZED AREAS OF THICK AND REDUCED OPACITY AND MANUFACTURING PROCESS

The invention relates to a security paper sheet having localized areas of reduced thickness and opacity and more particularly a paper for bank notes or security paper comprising large areas of reduced thickness and opacity, to specific locations, these areas being watermarks.

The invention preferably relates to a paper sheet comprising at least one zone having a lower uniform average opacity of at least 40% relative to the opacity of the rest of the sheet.

In the present description, "paper" means any sheet obtained by wet route using a suspension of natural cellulose fibers and / or synthetic fibers may contain various fillers and additives commonly used in papermaking.

already known in the prior art papers that are transparent! her. These papers are rendered transparent for example by chemical compositions (see in particular the French patent No. 8,205,124, filed March 15, 1982 by Arjomari-PRIOUX). These papers are rendered transparent over their entire surface and are intended for applications for industrial design, breeding plans, etc.

Also known chemical processes of partial transparentizing, that is to say at determined locations. These methods use compounds based on fat or mineral or vegetable oil which are deposited by printing. However, it is difficult to print on these areas transparentisées using usual current printing techniques (offset, intaglio, rotogravure, etc.).

Furthermore, it is known to make differences in thickness and density in the paper, including the technical watermarks used to secure papers for banknotes, identity documents or official documents and value. These watermarks are obtained during the manufacture of the paper sheet with round shapes having indentations and / or raised or using watermarking rolls with drawings recessed and / or raised associated with a Fourdrinier wire (Fourdrinier machine). An image is then obtained which, when viewed in the transfer paper, appears to be clear, if the watermark roll includes a raised pattern, or dark, if the watermark roll includes a hollow drawing. The light areas are due to the fact that the thickness of the sheet and the density of the fibers are smaller than the thickness of the sheet and the fiber density in areas where there is no imprint the watermark roll . In contrast, the dark areas are due to the fact that the thickness of the sheet and the fiber density are more important.

Such watermarks include light parts which generally have areas of several mm 2 and the change in opacity between the light part of the watermark and non-watermark paper is low. If one wishes to make an impression on the light areas of these watermarks, it is very difficult to match the light areas and printing and even with a very accurate tracking watermarks, one finds it difficult to get a good match.

It was disclosed in European Patent Application No. 388090, filed March 9, 1990 by STREET COMPANY PLC. a security paper comprising areas of reduced opacity, to specific and well localized areas, areas for viewing by transmission, to the naked eye, impressions carried on the opposite face to the face that looking at the paper . The zones can for example be made as a watermark using methods by round or dandy rolls.

But in this application, it does not describe how we get these industrial areas.

Industrially, it is relatively easy to manufacture paper with reduced thickness areas and thus clear, obtained by the technique of filigree, when the area of these areas is less than 0.4 cm 2. By cons, if one wishes to obtain zones with an area greater than 0.4 cm 2, by the technique of the art human watermark experiencing technical problems.

The first problem is: To create a watermark, the skilled person knows that one can work e canvas of a round shape with a punch. For example, if you want a clear circular zone, embossera the canvas with a circular punch. However, using such a method, one does not obtain a clear zone of constant opacity. Indeed, it was found that the fibers tend to settle in larger quantities near the center of the embossed part on the edges and therefore the watermark from the center appears much less clear than the edges. When using a dandy roll comprises raised protrusions, the same phenomenon is obtained.

A second problem is that when we want the areas of reduced thickness and thus having clear an area of more than 0.4 cm 2, you do not get a clear area.

Also known various means to prevent check fraud. Thus, one can add or paper checks for chemical compounds that react with acids, bases or pencils erasers. However, we're always looking for new ways against forgery.

Have been described in the European patent application filed on 18 November 1992 by the applicant and published June 30, 1993 under the number EP-A-539 384, a method of manufacturing a sheet of paper having at least one region having a thickness reduced relative to the thickness of the rest of the sheet and having an area of at least 0.4 cm 2, by forming on a fabric embossed or unsaturated, optionally disposed on a round shape, an aqueous dispersion containing at least cellulose fibers, draining water to form the sheet, in the presence or absence of a dandy roll, drying. Using flexible parts that Ton filigraneuse associated with the fabric, the dandy roll or round shape, so that water Végouttage during the formation of the sheet in the areas of flexible parts is decreased compared to the draining the water in areas having no flexible piece.

The paper obtained according to this process is such that the area having a reduced thickness has a thickness of up to 40% of the thickness of the remainder of the sheet. The sheet may also be such that said area has an average opacity less up to 40% of the opacity of the rest of the sheet. Such a method makes it possible to obtain areas of reduced opacity. However, it still seeks to reduce the opacity of areas.

In addition, the method requires a transformation of the paper machine, that Ton filigraneuse associated with the fabric, or dandy roll, or round, flexible parts. These parts must be attached to specific locations and therefore require additional handling. In addition, the area has a thickness less than 30% relative to the thickness of the rest of the sheet.

banknotes also are known which are made of transparent plastic sheets on which is carried a double-sided printing, printing is such that it leaves a completely transparent area. On this transparent area is plotted a hologram. Such plastic notes, however, have some drawbacks. They are very resistant to handling and circulation since the impression can be fragile on the plastic. This is why we prefer paper tickets, but we wish at the same time achieve the most transparent area. However, according to the method described in EP-A-549 384, the area obtained is certainly reduced thickness and of reduced opacity, but we want an even lower opacity area.

Therefore, another object of the invention is to achieve in the paper an almost transparent or translucent area without piercing the paper in this area.

Another object is to achieve in the paper a substantially transparent or translucent area, this area can be printed and / or can receive a hologram or any other distinctive mark or security.

This area should be strong enough to support the transfer of a security mark.

An object of the invention to provide areas of reduced thickness compared to the rest of the paper without having to use flexible parts associated.

Another object of the invention is to provide areas having a thickness much smaller than 40% relative to the rest of the sheet.

To this end, the invention relates to a sheet of paper having at least one zone of reduced opacity, that is to say an area having a uniform average opacity lower by at least about 40% with respect to the opacity the rest of the sheet, the area having an area of at least 0.4 cm 2, characterized in that the region has a reduced opacity because of the reduction in its thickness relative to the thickness of the rest of the sheet and the fact that it suffered an additional transparentizing.

The sheet according to the invention may comprise in a part of the area of ​​reduced opacity a hologram, an iridescent coating, printing using conventional inks or inks containing color pigments, fluorescent pigments, luminescent compounds photochromic piezooptiques, piezochromic.

The paper sheet may be a monolayer or single ply sheet, i.e. a sheet having a region whose thickness is not zero, the remaining thickness being transparentized chemically.

According to another embodiment, the paper sheet may be a two-ply sheet or two layers, that is to say it consists of a first ply or layer having a region whose thickness is zero, and a second jet partially or completely transparentized. In the event that the second ply is completely transparentized, the jet can be obtained according to the technique of tracing paper, namely from a suspension of highly refined cellulose fiber, to obtain transparency. In the event that the second ply is partially transparentized, it is chemically transparentized in an area which comes into correspondence with the zero thickness area of ​​the first jet.

The invention further relates to a method for manufacturing a sheet of paper having at least one region having a reduced thickness relative to the thickness of the remainder of the sheet, characterized in that:

- a first layer of paper is formed on a wire of a first wet end of a paper machine,

- a second layer of paper is formed on a wire of a second wet end of a paper machine,

- Tune the two layers of paper having at least local regions of smaller thickness, so that the thickness of the two layers of paper in said regions is up to 80% relative to the thickness of the rest of the leaf,

- it combines the two layers and dried.

One or even two paper layers can be made without problem so as to be locally very thin, Tune at least one layer of paper in a region being locally reduced so that the overall thickness of the two layers is small enough to get a good transparency.

Although the paper layers are carried on separate paper webs, there is obtained a sheet of paper it is no longer possible to separate due to the quick coupling of these layers and their common drying. The sheet of paper is no different from a sheet of paper carried on a single canvas.

The method is such that the lower thickness regions in the one or more paper layers are produced by embossed regions in relief on the mechanical weave, whereby the deposition of fibers in these areas is reduced or totally banned .

Preferably at least one of the paper layers is made by a cylinder machine.

More preferential! Ly, one of the two layers can include regions in which the thickness is zero.

The thinner thickness regions paper webs are in the form of a simple geometrical pattern, particularly in the form of approximately rectangular flat regions, round or elliptical or any other shape.

The following description, the accompanying drawings by way of non-limiting examples will show how the invention can be implemented. Figure 1 shows a device that can be used in the manufacture of security paper of the invention.

Figures 2, 3 and 4, 5 and 6 show in section various papers made according to the invention.

7 shows a check paper obtained according to the invention.

Figure 1 shows a device that can be used to produce a paper of the invention. The device essentially corresponds to the usual paper machines of commerce, which comprises at least two separate wet ends. The preferred embodiment shown here consists of a combination of two wet ends to round 1 and 2 a so-called paper machine dual round shape. In the wet end 1 is performed a first paper web 3, which is directed towards the second wet end 2 being suspended below the felt holder 4. In the second device 2 is carried out a second paper web 5. The two paper webs are combined at the roller 6 and are then dried.

is preferably used for the realization of two layers of paper two facilities round shape. But it is also possible to make the two layers of paper in installations in flat table, or use for the realization of two layers of paper a combination of an installation flat table and a round installation. Finally, one can use only a round shape and in this case we transparentized the sheet in the areas of reduced thickness.

Figures 2 and 3, a paper is shown according to the invention. This sheet 7 is formed of a first strip 3 and a second strip 5. The strip 5 comprises clear watermarks 8 obtained for example by a raised embossing the web of round 5. These clear watermarks have a depth e ,. The total thickness e t of the sheet 7 is the sum of the thicknesses e 3 of the strip 3 and 6 e of the strip 5. The thickness e 2 of the sheet 7 facing the watermarks 8 is less than the total thickness e t. In Figure 2, ae = 1/3 = 33.3% e t e t.

In Figure 3, we have e, t e = 1/2 = 50% an d. In Figure 4, the region 8 is such that the strip 5 comprises a hole.

Therefore the thickness reduction is about 33% in the first case and 50% in the second case. The sheet of Figure 3 thus has a reduced opacity much less than the opacity of the sheet of Figure 2 in the region 8 and for a total thickness t e substantially equal.

By adjusting the thickness e 3 and e B of the strips 3 and 5, and the depth e, watermarks 8, opacities and reduced thicknesses than 1 is desired can be obtained.

The sheet shown in Figure 5 is performed according to the single-jet technique. This sheet is obtained by the method described in EP-A-549 384.

The sheet 11 comprises zones 12, 12a, 12b, of thickness e, and areas 13, 13a, of thickness e 2 non-zero. Areas 13, 13a have a density of fibers much lower than the density of zones 12, 12a, 12b. Each area 13, 13a undergoes an additional transparentization. This transparentization is carried out chemically according to this embodiment. Preferably, the transparentization is performed using a transparentization composition described in the European patent EP-91 341. The applicant additional transparentization is performed after drying the sheet, in the end machine.

This composition may for example be made of:

12% of a ketone condensation resin - modified aldehyde 23% of a hexaméthoxyméthylméla ined resin 4% ethyl alcohol 17% butyl alcohol 28% dibutylphthalate 16% of Isopar affiniques products.

This composition is applied for example by printing by the aid of a gravure printing cylinder, engraving of the cylinder corresponding to the areas 13, 13a to transparentiser.

Figure 6 shows in section a sheet 14 obtained according to the technique of "two-ply" shown in Figure 1.

The sheet 11 shown in Figure 6 is formed of a first strip 16 and a second band 17. The band 17 is such that it has regions of zero thickness 18. The strip 16 may be transparentized or not in the areas opposite the areas 18. The tape 17 may also have areas 18 of non-zero thickness that are then clear watermarks obtained for example by a raised embossing the fabric round shape 5. Similarly, in this case, can transparentiser or not the web 16 in areas opposite the areas 18.

the thick zones is carried zero embossant the web of round 5, sufficiently to at the level of embossings, there is no deposit of cellulose fibers.

If one carries out the two paper layers in installations Fourdrinier, the band 16 may be a tracing paper obtained by refining pushed cellulose fibers.

Can be deposited printed patterns 15 opposite zones 18 may also be deposited layers of fluorescent pigments, iridescent pigments of layers or print, metal printing, holograms. then there will be a sheet of paper having a transparent region in transmitted light, this zone being of large area. If a layer, for example iridescent on the transparent area, this layer covering only partially the transparent area, there will be an additional visual effect. Moreover, such a sheet will be very difficult to reproduce color copier for the iridescent area will not be reproduced by copying and transparent area will be opaque after copying.

In Figure 7 there is shown a security paper, preferably a paper checks, obtained according to the method of the invention. The security paper 19 includes at least one zone 20 whose thickness is less than the thickness of the remainder of the sheet. So if you write on the area 20, the amount of the check, if a counterfeiter would try to scratching that area 20, it will pierce the security paper. Preferably, the zone 20 has a thickness less than 40% the thickness of the remainder of the sheet.

Claims

1. Security paper sheet comprising at least one opaque region (3, 20) reduced, i.e. an area having a uniform average opacity less than the opacity of the rest of the sheet, the area having an area of ​​at least 0.4 cm 2, characterized in that the region has a reduced opacity because of the reduction of its thickness e 2 with respect to the thickness e of the rest of the sheet and the fact that it has suffered an additional transparentization.
2. Sheet according to claim 1, characterized in that the zone of reduced opacity is less uniform average opacity of at least 40% relative to the opacity of the rest of the sheet.
3. Sheet according to any of claims 1 or 2, characterized in that it comprises in part of the area of ​​reduced opacity a security element (15) such as a hologram, an iridescent coating, a printing using conventional inks or inks containing color pigments, fluorescent pigments, luminescent, photochromic compounds, piezooptiques, piezochro es.
4. Sheet according to any of the preceding claims, characterized in that it is onojet having a region (3) whose thickness e 2 is not zero, the remaining thickness being transparentized chemically.
5. Sheet according to any of claims 1 to 3, characterized in that it is a two-ply sheet (16, 17) consists of a first jet (17) having a region whose thickness is zero, and a second jet (16) partially or completely transparentized.
6. Sheet according to claim 5, characterized in that the second ply (16) is completely transparentized and obtained using the technique of tracing paper from a suspension of highly refined cellulose fibers.
7. Sheet according to claim 5, characterized in that the second ply (16) is partially transparentized by a chemical route in an area which comes into correspondence with the region (18) of zero thickness of the first ply (17).
8. A method of manufacturing a sheet of paper having at least one region having a reduced thickness relative to the thickness of the remainder of the sheet, characterized in that:
- a first layer is formed (3) of paper on a wire of a first wet end of a paper machine,
- forming a second layer (5) of paper on a wire of a second wet end of a paper machine,
- Tune the two layers of paper having at least regions (8) local smaller thickness so that the thickness e 2 of the two layers of paper in said regions is up to 80% with respect to the thickness (e t) of the rest of the sheet, - the two layers are combined and dried,
- optionally transparentized is partially or totally of the regions (8) of smaller thickness.
9. The method of claim 10, characterized in that one of the two layers has regions (8) local zero thickness.
10. The method of claim 8 or 9, characterized in that the method is such that the regions (8) of smaller thickness in the one or more paper plies are made by embossed regions in relief on the wire, whereby the deposition of fibers in these areas is reduced or totally forbidden.
11. Method according to one of Claims 8 to 10, characterized in that preferably at least one of the two paper layers is formed by a cylinder mold machine.
12. Method according to one of Claims 8 to 11, characterized in that the regions (8) of thinner thickness of the paper webs are in the form of a simple geometrical pattern, particularly in the form of approximately rectangular flat areas round or elliptical.
13. sheet obtained by the method according to one of Claims 8-11.
14. Application of a sheet according to one of Claims 1 to 7 and 13 as paper for banknotes.
15. Application of a sheet according to one of Claims 1 to 7 and 13 as security paper.
PCT/FR1994/000225 1993-03-02 1994-03-01 Security paper comprising localised areas with reduced thickness and opacity, and method for making same WO1994020679A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR93/02373 1993-03-02
FR9302373 1993-03-02
FR9311485 1993-09-28
FR93/11485 1993-09-28

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP19940908388 EP0687324B2 (en) 1993-03-02 1994-03-01 Security paper comprising localised areas with reduced thickness and opacity, and method for making same
DE1994622705 DE69422705D1 (en) 1993-03-02 1994-03-01 Security paper with reduced thickness and opacity in local areas and the process for its manufacture
DE1994622705 DE69422705T3 (en) 1993-03-02 1994-03-01 Security paper with reduced thickness and opacity in local areas and the process for its manufacture

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US08/862,361 Continuation US6402888B1 (en) 1993-03-02 1997-05-23 Security paper comprising localized areas with reduced thickness and opacity, and method for making same

Publications (1)

Publication Number Publication Date
WO1994020679A1 true WO1994020679A1 (en) 1994-09-15

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ID=26230137

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1994/000225 WO1994020679A1 (en) 1993-03-02 1994-03-01 Security paper comprising localised areas with reduced thickness and opacity, and method for making same

Country Status (5)

Country Link
US (1) US6402888B1 (en)
EP (1) EP0687324B2 (en)
DE (2) DE69422705D1 (en)
ES (1) ES2142937T5 (en)
WO (1) WO1994020679A1 (en)

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EP0773320A1 (en) 1995-11-10 1997-05-14 Arjo Wiggins S.A. Security sheet having a roughly constant thickness
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FR2804447A1 (en) * 2000-02-01 2001-08-03 Arjo Wiggins Sa Paper with a watermark has multitone effect and canvas to make this paper
FR2804448A1 (en) * 2000-02-01 2001-08-03 Arjo Wiggins Sa Security paper having a security zone, method for making a paper and such device for carrying out this method
WO2002038863A2 (en) * 2000-11-10 2002-05-16 Banque De France Method for producing a security document
WO2003082600A2 (en) 2002-04-03 2003-10-09 Arjo Wiggins Security Sas Security document with marker
FR2897078A1 (en) * 2006-02-09 2007-08-10 Arjowiggins Soc Par Actions Si A sheet material comprising at least one watermark with a colored hue.
FR2903706A1 (en) * 2006-07-13 2008-01-18 Arjowiggins Soc Par Actions Si Sheet including a plastic part and a portion of fibrous material.
FR2925535A1 (en) * 2007-12-21 2009-06-26 Arjowiggins Licensing Soc Par Security sheet comprising a fibrous substrate comprising at least one watermark
FR2925534A1 (en) * 2007-12-24 2009-06-26 Arjowiggins Licensing Soc Par Structure of safety comprising the nematic liquid crystal
WO2009115766A2 (en) * 2008-03-19 2009-09-24 De La Rue International Limited Improvements in making sheets
US7632380B2 (en) * 2002-05-22 2009-12-15 Arjowiggins Security Article formed from at least a fibrous material jet comprising at least a null thickness zone and method for making same
US20110056638A1 (en) * 2008-04-11 2011-03-10 Arjowiggins Security method of fabricating a sheet comprising a region of reduced thickness or of increased thickness in register with a ribbon, and an associated sheet
US8372241B2 (en) 2007-07-11 2013-02-12 Arjowiggins Security Process for manufacturing a sheet material
US8394238B2 (en) * 2004-06-16 2013-03-12 Cartiere Fedrigoni E C. S.P.A. Apparatus and method for manufacturing security paper
US8449719B2 (en) 2007-12-28 2013-05-28 Arjowiggins Security Security paper

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FR2842460B1 (en) * 2002-07-19 2004-10-08 Arjo Wiggins Document Security protects against sided copy / back
FR2849624B1 (en) 2003-01-02 2005-03-25 Arjo Wiggins Secutity Sas Sheet with an area of ​​reduced opacity copy protection
FR2853970B1 (en) * 2003-04-18 2005-10-21 Arjo Wiggins translucent multilayer support having a visible pattern in reflection and not transparent
FR2861101B1 (en) * 2003-10-15 2007-06-15 Arjo Wiggins multijet security paper
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DE102005045566A1 (en) * 2005-03-23 2006-09-28 Giesecke & Devrient Gmbh Multi-layer security paper
DE102005022018A1 (en) * 2005-05-12 2006-11-16 Giesecke & Devrient Gmbh Security paper and method for its preparation
DE102005032815A1 (en) 2005-07-12 2007-01-18 Giesecke & Devrient Gmbh A method for producing a security paper, papermaking mold element for papermaking
US20070131368A1 (en) * 2005-12-14 2007-06-14 Sonoco Development, Inc. Paperboard with discrete densified regions, process for making same, and laminate incorporating same
US20070178261A1 (en) * 2006-01-27 2007-08-02 Avery Levy Paper envelope having an integrated magnetic recording medium
GB2437939B (en) * 2006-05-08 2008-03-26 Rue De Int Ltd Improvements in security substrates
US8125667B2 (en) * 2006-09-15 2012-02-28 Avery Levy System and method for enabling transactions by means of print media that incorporate electronic recording and transmission means
US20080166262A1 (en) * 2007-01-04 2008-07-10 Deka Ganesh C Medical packaging substrate with security feature
AU2009258133A1 (en) * 2008-06-12 2009-12-17 Crane & Co., Inc. Method for increasing adhesion between a security element and a fibrous sheet material
FR2941713B1 (en) * 2009-02-03 2011-04-01 Arjowiggins Security Process for securisation of an opaque object colors.
US9694536B2 (en) 2013-11-18 2017-07-04 Huhtamaki, Inc. System and method for embossing the wire side of a molded fiber article
GB2539644A (en) * 2015-06-16 2016-12-28 Mcor Tech Ltd Desktop 3-dimensional printing apparatus
RU2610397C1 (en) * 2015-12-01 2017-02-09 Акционерное общество "Гознак" (АО "Гознак") Device for production of paper with transparent areas and paper produced using device

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FR2741089A1 (en) * 1995-11-10 1997-05-16 Arjo Wiggins Sa Sensibly constant thickness safety sheet
EP0773320A1 (en) 1995-11-10 1997-05-14 Arjo Wiggins S.A. Security sheet having a roughly constant thickness
EP0819791A1 (en) * 1996-07-18 1998-01-21 FAD - Fabriano Autoadesivi S.p.A. Apparatus for manifacturing a filtering medium in sheet form
US5993605A (en) * 1996-07-18 1999-11-30 Fad-Fabriano Autoadesivi S.P.A. Apparatus for manufacturing a filtering medium in sheet form
US6911115B2 (en) 2000-02-01 2005-06-28 Arjowiggins Security Security paper
FR2804447A1 (en) * 2000-02-01 2001-08-03 Arjo Wiggins Sa Paper with a watermark has multitone effect and canvas to make this paper
FR2804448A1 (en) * 2000-02-01 2001-08-03 Arjo Wiggins Sa Security paper having a security zone, method for making a paper and such device for carrying out this method
EP1122360A1 (en) * 2000-02-01 2001-08-08 Arjo Wiggins S.A. Paper with multitone watermark and screen for manufacturing the paper
WO2001057312A1 (en) * 2000-02-01 2001-08-09 Arjo Wiggins Security paper
US6991846B2 (en) 2000-02-01 2006-01-31 Arjowiggins Security Paper including a multitone-effect watermark, and a wire for manufacturing the paper
FR2816642A1 (en) * 2000-11-10 2002-05-17 Banque De France Security document, e.g. a banknote, is of an opaque paper where zones of an increased transparency are formed by an ultrasonic sonotrode as a security which can be recognized by the public but cannot be photocopied
WO2002038863A3 (en) * 2000-11-10 2002-08-15 Banque De France Method for producing a security document
WO2002038863A2 (en) * 2000-11-10 2002-05-16 Banque De France Method for producing a security document
WO2003082600A2 (en) 2002-04-03 2003-10-09 Arjo Wiggins Security Sas Security document with marker
EP2335945A2 (en) 2002-04-03 2011-06-22 Arjowiggins Security Security document with marker.
US7632380B2 (en) * 2002-05-22 2009-12-15 Arjowiggins Security Article formed from at least a fibrous material jet comprising at least a null thickness zone and method for making same
US8394238B2 (en) * 2004-06-16 2013-03-12 Cartiere Fedrigoni E C. S.P.A. Apparatus and method for manufacturing security paper
US8182651B2 (en) 2006-02-09 2012-05-22 Arjowiggins Sheet material comprising at least one watermark having a colored shade
US8852396B2 (en) 2006-02-09 2014-10-07 Arjowiggins Security Sheet material comprising at least one watermark having a colored shade
FR2897078A1 (en) * 2006-02-09 2007-08-10 Arjowiggins Soc Par Actions Si A sheet material comprising at least one watermark with a colored hue.
WO2007090999A3 (en) * 2006-02-09 2008-03-06 Arjowiggins Film material comprising at least one watermark having a coloured nuance
WO2008007035A3 (en) * 2006-07-13 2008-03-06 Arjowiggins Hybrid foil, such as security foil, formed by assembling a fibrous part and a plastic part
FR2903706A1 (en) * 2006-07-13 2008-01-18 Arjowiggins Soc Par Actions Si Sheet including a plastic part and a portion of fibrous material.
US9644319B2 (en) 2006-07-13 2017-05-09 Arjowiggins Hybrid sheet, such as a security sheet, formed by assembling a fibrous part and a plastic part
US8372241B2 (en) 2007-07-11 2013-02-12 Arjowiggins Security Process for manufacturing a sheet material
FR2925535A1 (en) * 2007-12-21 2009-06-26 Arjowiggins Licensing Soc Par Security sheet comprising a fibrous substrate comprising at least one watermark
WO2009081017A3 (en) * 2007-12-21 2009-10-15 Arjowiggins Licensing Security sheet including a fibrous substrate comprising at least one watermark
WO2009081017A2 (en) * 2007-12-21 2009-07-02 Arjowiggins Licensing Security sheet including a fibrous substrate comprising at least one watermark
WO2009081035A3 (en) * 2007-12-24 2009-10-08 Arjowiggins Licensing Safety structure comprising nematic liquid crystals
US8397995B2 (en) 2007-12-24 2013-03-19 Arjowiggins Security Security structure including nematic liquid crystals
WO2009081035A2 (en) * 2007-12-24 2009-07-02 Arjowiggins Licensing Safety structure comprising nematic liquid crystals
FR2925534A1 (en) * 2007-12-24 2009-06-26 Arjowiggins Licensing Soc Par Structure of safety comprising the nematic liquid crystal
US8449719B2 (en) 2007-12-28 2013-05-28 Arjowiggins Security Security paper
US8430994B2 (en) 2008-03-19 2013-04-30 De La Rue International Limited Making sheets
WO2009115766A3 (en) * 2008-03-19 2010-01-14 De La Rue International Limited Method of making sheets for security documents
EA020337B1 (en) * 2008-03-19 2014-10-30 Де Ля Рю Интернэшнл Лимитед A method of manufacturing a sheet with water marks
WO2009115766A2 (en) * 2008-03-19 2009-09-24 De La Rue International Limited Improvements in making sheets
US20110056638A1 (en) * 2008-04-11 2011-03-10 Arjowiggins Security method of fabricating a sheet comprising a region of reduced thickness or of increased thickness in register with a ribbon, and an associated sheet

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EP0687324B2 (en) 2005-12-07
US6402888B1 (en) 2002-06-11
EP0687324A1 (en) 1995-12-20
EP0687324B1 (en) 2000-01-19
DE69422705D1 (en) 2000-02-24
ES2142937T5 (en) 2006-07-16
DE69422705T3 (en) 2006-08-17
DE69422705T2 (en) 2000-10-05
ES2142937T3 (en) 2000-05-01

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